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A Positive Feedback Passive Mixer-First Receiver Front-End

Nejdel, Anders LU ; Abdulaziz, Mohammed LU ; Törmänen, Markus LU orcid and Sjöland, Henrik LU orcid (2015) IEEE Radio Frequency Integrated Circuits, RFIC 2015 p.79-82
Abstract
This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a... (More)
This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a 1.2V supply is between 22.8 and 62.8mA, depending on frequency operation. (Less)
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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
pages
79 - 82
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Radio Frequency Integrated Circuits, RFIC 2015
conference location
Phoenix, Arizona, United States
conference dates
2015-05-17 - 2015-05-19
external identifiers
  • scopus:84975704313
DOI
10.1109/RFIC.2015.7337709
project
EIT_DARE Digitally-Assisted Radio Evolution
language
English
LU publication?
yes
id
05d45412-ff66-4c02-b54c-38eb7260ee8b (old id 5052456)
date added to LUP
2016-04-04 13:16:09
date last changed
2024-01-13 06:30:48
@inproceedings{05d45412-ff66-4c02-b54c-38eb7260ee8b,
  abstract     = {{This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a 1.2V supply is between 22.8 and 62.8mA, depending on frequency operation.}},
  author       = {{Nejdel, Anders and Abdulaziz, Mohammed and Törmänen, Markus and Sjöland, Henrik}},
  booktitle    = {{2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)}},
  language     = {{eng}},
  pages        = {{79--82}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{A Positive Feedback Passive Mixer-First Receiver Front-End}},
  url          = {{http://dx.doi.org/10.1109/RFIC.2015.7337709}},
  doi          = {{10.1109/RFIC.2015.7337709}},
  year         = {{2015}},
}